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-rw-r--r--src/mesa/main/vtxfmt.c191
1 files changed, 191 insertions, 0 deletions
diff --git a/src/mesa/main/vtxfmt.c b/src/mesa/main/vtxfmt.c
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+/*
+ * Mesa 3-D graphics library
+ * Version: 6.3
+ *
+ * Copyright (C) 1999-2004 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ * Gareth Hughes
+ */
+
+#include "glheader.h"
+#include "api_loopback.h"
+#include "context.h"
+#include "imports.h"
+#include "mtypes.h"
+#include "state.h"
+#include "vtxfmt.h"
+
+
+/* The neutral vertex format. This wraps all tnl module functions,
+ * verifying that the currently-installed module is valid and then
+ * installing the function pointers in a lazy fashion. It records the
+ * function pointers that have been swapped out, which allows a fast
+ * restoration of the neutral module in almost all cases -- a typical
+ * app might only require 4-6 functions to be modified from the neutral
+ * baseline, and only restoring these is certainly preferable to doing
+ * the entire module's 60 or so function pointers.
+ */
+
+#define PRE_LOOPBACK( FUNC ) \
+{ \
+ GET_CURRENT_CONTEXT(ctx); \
+ struct gl_tnl_module * const tnl = &(ctx->TnlModule); \
+ const int tmp_offset = _gloffset_ ## FUNC ; \
+ \
+ ASSERT( tnl->Current ); \
+ ASSERT( tnl->SwapCount < NUM_VERTEX_FORMAT_ENTRIES ); \
+ ASSERT( tmp_offset >= 0 ); \
+ \
+ /* Save the swapped function's dispatch entry so it can be */ \
+ /* restored later. */ \
+ tnl->Swapped[tnl->SwapCount].location = & (((_glapi_proc *)ctx->Exec)[tmp_offset]); \
+ tnl->Swapped[tnl->SwapCount].function = (_glapi_proc)TAG(FUNC); \
+ tnl->SwapCount++; \
+ \
+ if ( 0 ) \
+ _mesa_debug(ctx, " swapping gl" #FUNC"...\n" ); \
+ \
+ /* Install the tnl function pointer. */ \
+ SET_ ## FUNC(ctx->Exec, tnl->Current->FUNC); \
+}
+
+#define TAG(x) neutral_##x
+#include "vtxfmt_tmp.h"
+
+
+/**
+ * Use the per-vertex functions found in <vfmt> to initialze the given
+ * API dispatch table.
+ */
+static void
+install_vtxfmt( struct _glapi_table *tab, const GLvertexformat *vfmt )
+{
+ SET_ArrayElement(tab, vfmt->ArrayElement);
+ SET_Color3f(tab, vfmt->Color3f);
+ SET_Color3fv(tab, vfmt->Color3fv);
+ SET_Color4f(tab, vfmt->Color4f);
+ SET_Color4fv(tab, vfmt->Color4fv);
+ SET_EdgeFlag(tab, vfmt->EdgeFlag);
+ SET_EvalCoord1f(tab, vfmt->EvalCoord1f);
+ SET_EvalCoord1fv(tab, vfmt->EvalCoord1fv);
+ SET_EvalCoord2f(tab, vfmt->EvalCoord2f);
+ SET_EvalCoord2fv(tab, vfmt->EvalCoord2fv);
+ SET_EvalPoint1(tab, vfmt->EvalPoint1);
+ SET_EvalPoint2(tab, vfmt->EvalPoint2);
+ SET_FogCoordfEXT(tab, vfmt->FogCoordfEXT);
+ SET_FogCoordfvEXT(tab, vfmt->FogCoordfvEXT);
+ SET_Indexf(tab, vfmt->Indexf);
+ SET_Indexfv(tab, vfmt->Indexfv);
+ SET_Materialfv(tab, vfmt->Materialfv);
+ SET_MultiTexCoord1fARB(tab, vfmt->MultiTexCoord1fARB);
+ SET_MultiTexCoord1fvARB(tab, vfmt->MultiTexCoord1fvARB);
+ SET_MultiTexCoord2fARB(tab, vfmt->MultiTexCoord2fARB);
+ SET_MultiTexCoord2fvARB(tab, vfmt->MultiTexCoord2fvARB);
+ SET_MultiTexCoord3fARB(tab, vfmt->MultiTexCoord3fARB);
+ SET_MultiTexCoord3fvARB(tab, vfmt->MultiTexCoord3fvARB);
+ SET_MultiTexCoord4fARB(tab, vfmt->MultiTexCoord4fARB);
+ SET_MultiTexCoord4fvARB(tab, vfmt->MultiTexCoord4fvARB);
+ SET_Normal3f(tab, vfmt->Normal3f);
+ SET_Normal3fv(tab, vfmt->Normal3fv);
+ SET_SecondaryColor3fEXT(tab, vfmt->SecondaryColor3fEXT);
+ SET_SecondaryColor3fvEXT(tab, vfmt->SecondaryColor3fvEXT);
+ SET_TexCoord1f(tab, vfmt->TexCoord1f);
+ SET_TexCoord1fv(tab, vfmt->TexCoord1fv);
+ SET_TexCoord2f(tab, vfmt->TexCoord2f);
+ SET_TexCoord2fv(tab, vfmt->TexCoord2fv);
+ SET_TexCoord3f(tab, vfmt->TexCoord3f);
+ SET_TexCoord3fv(tab, vfmt->TexCoord3fv);
+ SET_TexCoord4f(tab, vfmt->TexCoord4f);
+ SET_TexCoord4fv(tab, vfmt->TexCoord4fv);
+ SET_Vertex2f(tab, vfmt->Vertex2f);
+ SET_Vertex2fv(tab, vfmt->Vertex2fv);
+ SET_Vertex3f(tab, vfmt->Vertex3f);
+ SET_Vertex3fv(tab, vfmt->Vertex3fv);
+ SET_Vertex4f(tab, vfmt->Vertex4f);
+ SET_Vertex4fv(tab, vfmt->Vertex4fv);
+ SET_CallList(tab, vfmt->CallList);
+ SET_CallLists(tab, vfmt->CallLists);
+ SET_Begin(tab, vfmt->Begin);
+ SET_End(tab, vfmt->End);
+ SET_Rectf(tab, vfmt->Rectf);
+ SET_DrawArrays(tab, vfmt->DrawArrays);
+ SET_DrawElements(tab, vfmt->DrawElements);
+ SET_DrawRangeElements(tab, vfmt->DrawRangeElements);
+ SET_EvalMesh1(tab, vfmt->EvalMesh1);
+ SET_EvalMesh2(tab, vfmt->EvalMesh2);
+ ASSERT(tab->EvalMesh2);
+
+ /* GL_NV_vertex_program */
+ SET_VertexAttrib1fNV(tab, vfmt->VertexAttrib1fNV);
+ SET_VertexAttrib1fvNV(tab, vfmt->VertexAttrib1fvNV);
+ SET_VertexAttrib2fNV(tab, vfmt->VertexAttrib2fNV);
+ SET_VertexAttrib2fvNV(tab, vfmt->VertexAttrib2fvNV);
+ SET_VertexAttrib3fNV(tab, vfmt->VertexAttrib3fNV);
+ SET_VertexAttrib3fvNV(tab, vfmt->VertexAttrib3fvNV);
+ SET_VertexAttrib4fNV(tab, vfmt->VertexAttrib4fNV);
+ SET_VertexAttrib4fvNV(tab, vfmt->VertexAttrib4fvNV);
+#if FEATURE_ARB_vertex_program
+ SET_VertexAttrib1fARB(tab, vfmt->VertexAttrib1fARB);
+ SET_VertexAttrib1fvARB(tab, vfmt->VertexAttrib1fvARB);
+ SET_VertexAttrib2fARB(tab, vfmt->VertexAttrib2fARB);
+ SET_VertexAttrib2fvARB(tab, vfmt->VertexAttrib2fvARB);
+ SET_VertexAttrib3fARB(tab, vfmt->VertexAttrib3fARB);
+ SET_VertexAttrib3fvARB(tab, vfmt->VertexAttrib3fvARB);
+ SET_VertexAttrib4fARB(tab, vfmt->VertexAttrib4fARB);
+ SET_VertexAttrib4fvARB(tab, vfmt->VertexAttrib4fvARB);
+#endif
+}
+
+
+void _mesa_init_exec_vtxfmt( GLcontext *ctx )
+{
+ install_vtxfmt( ctx->Exec, &neutral_vtxfmt );
+ ctx->TnlModule.SwapCount = 0;
+}
+
+
+void _mesa_install_exec_vtxfmt( GLcontext *ctx, const GLvertexformat *vfmt )
+{
+ ctx->TnlModule.Current = vfmt;
+ _mesa_restore_exec_vtxfmt( ctx );
+}
+
+
+void _mesa_install_save_vtxfmt( GLcontext *ctx, const GLvertexformat *vfmt )
+{
+ install_vtxfmt( ctx->Save, vfmt );
+}
+
+
+void _mesa_restore_exec_vtxfmt( GLcontext *ctx )
+{
+ struct gl_tnl_module *tnl = &(ctx->TnlModule);
+ GLuint i;
+
+ /* Restore the neutral tnl module wrapper.
+ */
+ for ( i = 0 ; i < tnl->SwapCount ; i++ ) {
+ *(tnl->Swapped[i].location) = tnl->Swapped[i].function;
+ }
+
+ tnl->SwapCount = 0;
+}